Koblenz U310 Bag & Dirt Cup Models Bellows #12-0645-7

The bellows on the Koblenz U310 is a critical seal component — when it cracks or loses flexibility, suction transfer between the dirt cup and bag chamber suffers. This replacement restores that seal to factory spec.

• Genuine replacement bellows engineered to fit Koblenz U310 bag and dirt cup model variants
• Restores proper suction transfer by sealing the connection between the bag and dirt cup chamber
• OEM-spec construction ensures the same fit and flexibility as the original part
• A straightforward swap that requires no special tools — get your U310 back to full performance quickly
• Ships fast from the USA — sourced and fulfilled domestically for quick delivery

Part #12-0645-7